The Coefficient of Variation, Expressed as a Percent, Is Used $$\text { coefficient of variation } = 100 ( \mathrm {~s} / \overline { \mathrm { x } } )$$

The coefficient of variation, expressed as a percent, is used to describe the standard deviation relative to the mean. It allows us to compare variability of data sets with different measurement units and is calculated as follows: $$\text { coefficient of variation } = 100 ( \mathrm {~s} / \overline { \mathrm { x } } )$$ Find the coefficient of variation for the following sample of weights (in pounds) : $$\begin{array} { l l l l l } 138 & 134 & 186 & 105 & 197 \\136 & 172 & 152 & 116 & 125\end{array}$$

A) 22.7%
B) 25.4%
C) 20.7%
D) 18.2%